An IMU is something that could easily fit in the internals of the bot. Placement of the wheels was only in consideration of the CoG. My entry was more a test of "how much interesting stuff can I fit...

Thanks! I don't have any idea how far along HR-OS1 is, I've been meaning to have a look into it for a while now.
Lately I've been working on tidying up the hardware side, and this week I got my very...